The two young men had gone through thick and thin together and were in high spirits. Then the shadow of Cthulhu came quietly, tearing apart the tranquility. One believes in ancient gods and wants to conquer the world with evil power; the other insists on justice and vows to protect the peace of the world. The former close friends are now enemies. In the shadow of swords and swords, oaths and betrayals are intertwined, painting a gorgeous and sad picture.